Light bleeding

Okay for starters I love this app!! And since everyone is nice and helpful I’m having a little problem and probably making myself going crazy!! So yesterday I went to go pee and when I wiped myself I was bleeding a little it was like a light pink and my period was suppose to come but it did not (I freaked) and then I just kinda started thinking it’s late but then I downloaded another app and recorded when my last period was and it says I get it in two days... uhh what ???